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stupidinmath

  • 3 years ago

company a can install chairs in the theatre in 10 hours. company b can install them in 15 hours. the owner of a theatre wants the chairs installed in less than 8 hours. if the companies work together, can they install the chairs in less than 8 hours? justify.

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  1. RadEn
    • 3 years ago
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    if the companies work together, the long time needed = 10*15/(10+15) = 150/25 = 6 yes, they are can

  2. stupidinmath
    • 3 years ago
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    thanks!=)

  3. RadEn
    • 3 years ago
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    welcome

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